Products Description
Product Specifications
| Standards | ASTM B151 |
| Steel Grades | C70600 C70620 C71500 C71520 C74500 C75200 C75700 C76400 C77000 C79200 |
| Equivalent Materials | EN CW352H, DIN CuNi10Fe1Mn, JIS C7060T, ISO 11948-2 C70600 |
| Outer Diameter (OD) | 6mm - 254mmmm(0.24-10 inches) |
| Wall Thickness (WT) | 0.5mm - 12.7mm(0.02-0.5 inches) |
| Length | Up to 12 m or customized |
| Surface Treatment | bright-annealed |
| Production Process | Hot Rolling, Cold Rolling, Cold Drawing |
| Condition | Soft annealed O60 |
ASTM B151 C70600 copper tube does not require heat treatment. It may be annealed at 650°C for one hour to enhance its machinability and formability. Note that if heated above 800°C, the material will develop brittle phases, thereby compromising its mechanical properties.
With a Rockwell hardness of B75, C70600 exhibits excellent ductility; it is easy to fabricate and process, making it suitable for complex components and structures. ASTM B151 C70600 copper tube can be joined using various welding techniques-such as TIG, MIG, and submerged arc welding-though the use of copper-nickel filler metals containing over 60% nickel is recommended.
Customized Services
- The copper tubing is available in an outer diameter range of 6 mm to 254 mm, with wall thicknesses ranging from 0.5 mm to 12.7 mm. We offer customized tolerance services, and lengths can be cut to meet specific client requirements.
- We also provide shape customization services, in addition to U-shaped configurations. We support the fabrication of S-shaped tubes and other complex, curved geometries.
- The tubing is supplied with a bright annealed surface finish. We also offer various surface treatments, including fire-retardant and anti-static coatings, as well as pickling and passivation, mechanical polishing, and chemical polishing.
Chemical Composition
| Element | Cu (%) | Ni (%) | Fe (%) | Mn (%) | Zn (%) | Pb (%) |
| C70600 | 88.6 min | 9.0–11.0 | 1.0–1.8 | 1.0 max | 1.0 max | 0.02 max |
| C71500 | 69.0 min | 29.0–33.0 | 0.4–1.0 | 1.0 max | 1.0 max | 0.02 max |
| C79200 | 59.0–63.0 | 9.0–11.0 | – | – | 24.0–29.0 | 0.05 max |
Mechanical Properties
| Property | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HB) |
| C70600 | ≥ 275 | ≥ 105 | ≥ 30 | ≤ 80 |
| C71500 | ≥ 310 | ≥ 125 | ≥ 30 | ≤ 85 |
| C79200 | ≥ 345 | ≥ 150 | ≥ 25 | ≤ 90 |
Possible Alternative Grades
- For high-end power projects with more stringent corrosion resistance requirements, ASTM B151 C71500 may be utilized; however, it presents greater processing challenges compared to C70600.
- Power plant systems deployed in marine environments may employ Grade 2 Titanium, which offers superior resistance to seawater corrosion and biofouling, albeit at a higher cost.
- C70620 exhibits performance characteristics similar to those of C70600 but is subject to stricter tolerance requirements, making it suitable for power generation equipment where high dimensional precision of tubing is critical.
application areas
C70600 copper tubing is widely used in the power industry for applications such as power plant condensers, generator cooling systems, industrial cooling circuits, and heat exchangers in desalination plants.
Products Show
Testing Equipment
Factory Equipment
Pickling equipment
Products Package
We offer a wide range of packaging options, including plastic end caps, woven bags, wooden crates, and iron frames. Custom packaging solutions, logo branding, and other personalized requirements are also available to meet specific customer needs.
FAQ
Q: In a generator cooling system, is there a risk of chemical reactions between the coolant and other components that could compromise performance?
A: Under normal circumstances, C70600 copper tubing does not undergo chemical reactions with coolants; however, it is recommended to conduct a compatibility test between the specific coolant and the C70600 tubing before use.
Q: Approximately how long is the service life of this material when used in power transformer cooling systems?
A: The service life is typically around 15 to 25 years. To extend the lifespan of the tubing, it is essential to ensure a suitable operating environment for the transformer, avoiding exposure to moisture, corrosive gases, and other factors that could cause corrosion of the copper tubing.
Q: What is the maximum operating temperature for C70600 tubing?
A: It can typically operate continuously at temperatures of up to 200°C (392°F).
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